CN107520035B - Sand processing and dust removing device and method - Google Patents

Abstract

The invention belongs to the technical field of dust removal in sand and gravel processing systems, and specifically relates to a device and method for sand and gravel processing and dust removal, which includes the following steps: 1) When the crushing equipment is in continuous working state, open the dust collector to collect dust; 2) Inside the dust collector When the dust storage capacity reaches the full level, the exhaust valve on the bin pump is opened, and then the feed valve is opened to start feeding. Then the ash feeding screw is started with full load, and the ash feeding screw starts working until the bin pump is full of material. The ash spiral machine stops, and finally the feed valve on the bin pump is closed; 3) The dust in the bin pump is atomized and sent to the dust storage tank; 4) Step 1) to step 3) are automatically cycled until the dust storage tank is full. position, use transportation equipment to transport the full dust storage tank. It solves the problem of a large amount of dust generated during the crushing and screening process of the sand and gravel processing system. It has a high degree of automation, low failure rate, reliable operation, simple operation, labor saving, easy maintenance, pollution-free transportation, and environmental protection.

Description

A device and method for sand and gravel processing and dust removal

Technical field

The invention belongs to the technical field of dust removal in sand and gravel processing systems, and specifically relates to a device and method for sand and gravel processing and dust removal.

Background technique

As our country pays more and more attention to environmental protection. Various large-scale crushing equipment, screening equipment, etc. in the sand and gravel processing system produce a large amount of dust during the production process. Large-scale pulse dust removal equipment is required to collect dust first. The processing of large amounts of dust is extremely heavy. For dust treatment methods, traditional The dust treatment method is to manually push the dust collected by the dust collector using a trolley to the construction waste treatment area for treatment. During the transportation process, the dust will easily spread into the air due to strong winds and other natural factors, polluting the environment. Therefore, it is urgent to find an automated dust removal system technology.

Contents of the invention

The purpose of the invention is to overcome the problem in the prior art that a large amount of dust is generated during the crushing and screening process of the sand and gravel processing system.

To this end, the present invention provides a sand and gravel processing and dust removal method, which includes the following steps:

Step 1) When the crushing equipment is in continuous operation, turn on the dust collector. The dust collector collects the dust generated by the crushing equipment through the dust collection pipeline, and the collected dust enters the inverted cone of the dust collector;

Step 2) When the accumulation of dust in the dust collector reaches the full storage capacity, the dust level meter on the side of the dust collector sends a high signal to the automatic control system. The automatic control system opens the exhaust valve on the bin pump and then opens the feed valve to start. Feed, then the ash feeding screw machine starts with full load, the ash feeding screw machine starts working until the bin pump is full of material, the ash feeding screw machine stops, and finally the feeding valve on the bin pump is closed;

Step 3) The air compressor supporting the warehouse pump atomizes the dust in the warehouse pump through the air storage tank and air path, and then sends it into the dust storage tank through the ash delivery pipeline;

Step 4) Use the automatic control system to realize the automatic cycle from step 1) to step 3) until the dust storage tank is full, and finally use transportation equipment to transport the full dust storage tank.

There are multiple dust collectors, bin pumps and dust storage tanks. Multiple dust collectors and bin pumps are connected in parallel or in series. Finally, the dust is input into one or more dust storage tanks.

A sand and gravel processing and dust removal device, including crushing equipment, dust collection pipelines, dust collectors, ash feeding screws, second manual butterfly valves, warehouse pumps and supporting air sources, ash feeding pipelines, and side loading materials meter, dust storage tank, manual gate valve, pneumatic gate valve, bulk discharging device, bulk discharging platform, discharging monitoring device, automatic control system and outer packaging. The crushing equipment is connected to the dust collector through a dust collection pipeline. The bottom of the dust collector is connected to the warehouse pump and supporting air source through the ash screw machine and the second manual butterfly valve from top to bottom. The warehouse pump and supporting air source are connected to the dust storage tank through the ash delivery pipeline. The dust storage tank body One side is connected to the side-mounted material level meter of the tank, and the bottom of the dust storage tank is connected from top to bottom to the manual gate valve, pneumatic gate valve, bulk discharging device, bulk discharging platform and discharge monitoring device. The discharge monitoring device Connected to the automatic control system, the dust collector, ash conveyor screw, second manual butterfly valve, warehouse pump and supporting air source and the exterior of the automatic control system are all set in the same outer package.

It also includes a first manual butterfly valve, which is connected in the dust collection pipeline.

It also includes a dust removal side loading material level meter. The lower part of the dust collector is in the shape of an inverted cone, and the side of the inverted cone is connected to the dust removal side loading material level meter.

The described warehouse pump and supporting air source include a warehouse pump and supporting air source. The warehouse pump includes a feed pipeline, an exhaust pipeline, a feed valve, an exhaust valve, a pump body, a fluidization coil, a weighing module, Support legs, pressure transmitter, discharge pipeline, discharge valve, fluidization device, air intake pipeline. The top of the pump body is connected to the feed pipeline and exhaust pipeline respectively. The middle and lower parts of the feed pipeline are respectively Connect the feed valve and pressure transmitter, connect the exhaust valve to the exhaust pipeline, the lower part of the pump body is an inverted cone, the two sides of the inverted cone are connected to the weighing module, and the bottom of the weighing module is connected to the support leg , the bottom of the pump body is connected to the fluidization device, the fluidization device is connected to the inlet pipeline and the discharge pipeline respectively, the discharge valve is connected to the discharge pipeline, the fluidization coil includes a first pipeline and a second pipeline , one end of the first pipeline is connected to the top of the pump body, one end of the second pipeline is connected to the top of the inverted cone of the pump body, and the other end of the first pipeline and the other end of the second pipeline merge and connect to the air inlet pipeline , the inlet of the feed pipeline is connected to the second manual butterfly valve, the outlet of the discharge pipeline is connected to the ash delivery pipeline, and the air inlet of the air inlet pipeline is connected to the supporting air source.

The number of said tank side-mounted material level gauges is at least 3, which are respectively connected to the high, middle and low positions of the dust storage tank.

The volume of the silo pump is smaller than the volume of the cone of the dust collector.

Beneficial effects of the present invention: The device and method for sand and gravel processing and dust removal provided by the present invention use a dust collector to collect dust, and the dust in the dust collector is automatically sent into a large dust storage tank through an intelligent bin pump and ancillary equipment. It is stored and transported by special transport vehicles. It has a high degree of automation, low failure rate, reliable operation, simple operation, labor saving and easy maintenance. It also has high-tech system integration equipment with industrial control computer to monitor the entire operation process of the warehouse pump in real time. At the same time Fully sealed, pollution-free transportation, meeting environmental protection requirements.

Description of the drawings

The present invention will be further described in detail below with reference to the accompanying drawings.

Figure 1 is a schematic diagram of the structure and working principle of the present invention;

Figure 2 is a schematic structural diagram of the warehouse pump.

Explanation of reference signs: 1. Crushing equipment; 2. Manual butterfly valve; 3. Dust collection pipeline; 4. Dust collector; 5. Dust collector side loading level meter; 6. Ash feeding screw; 7. Second manual butterfly valve ; 8. Silo pump and supporting air source; 9. Ash delivery pipeline; 10. Side-mounted material level meter; 11. Dust storage tank; 12. Automatic control system; 13. External packaging; 14. Manual gate valve; 15. Pneumatic gate valve; 16. Bulk discharging device; 17. Bulk discharging platform; 18. Discharge monitoring device; 81. Feed valve; 82. Exhaust valve; 83. Pump body; 84. Fluidization plate Pipe; 85. Weighing module; 86. Supporting legs; 87. Pressure transmitter; 88. Discharge valve; 89. Fluidization device; 810. Air inlet pipeline; 811. Feed pipeline; 812. Exhaust pipe 813. Discharge pipeline; 841. First pipeline; 842. Second pipeline; a. Feed port; b. Discharge port; c. Air inlet; d. Exhaust port; e. Second pipeline air inlet; f. First pipeline air inlet.

Detailed ways

Example 1:

As shown in Figures 1 and 2, a sand and gravel processing and dust removal method is characterized by including the following steps:

Step 1) When the crushing equipment 1 is in continuous operation, turn on the dust collector 4, and the dust collector 4 collects the dust generated by the crushing equipment 1 through the dust collection pipeline 3, and the collected dust enters the inverted cone of the dust collector 4;

Step 2) When the accumulation of dust in the dust collector 4 reaches the full storage capacity, the dust removal side loading material level meter 5 sends a high signal to the automatic control system 12, and the automatic control system 12 opens the exhaust valve 82 on the bin pump, and then opens The feeding valve 81 starts feeding, and then the ash feeding screw machine 6 starts with full load. The ash feeding screw machine 6 starts to work until the material in the bin pump is full, the ash feeding screw machine 6 stops, and finally the feeding valve 81 on the bin pump is closed;

Step 3) The air compressor supporting the warehouse pump atomizes the dust in the warehouse pump through the air storage tank and the air path, and then sends it into the dust storage tank 11 through the ash delivery pipeline 9;

Step 4) realize the automatic cycle from step 1) to step 3) through the automatic control system 12 until the dust storage tank 11 is full, and finally use transportation equipment to transport the full dust storage tank 11 out. In case of special circumstances, when the crushing equipment 1 is in intermittent working state or the working time is short, it can also be set to manual mode. The operator turns on the bin pump and turns on the ash feeding screw 6 to meet the demand for one-time ash feeding.

The dust collector 4 is used to collect dust, and the dust in the dust collector 4 is automatically sent to the dust storage tank 11 for storage through the intelligent warehouse pump and ancillary equipment, and is transported out using a special transport vehicle, which has a high degree of automation, low failure rate, and reliable operation. It is simple to operate, saves manpower, and easy to maintain. It also has high-tech system integration equipment with an industrial control computer that monitors the entire operation process of the warehouse pump in real time. It is also fully sealed and pollution-free, meeting environmental protection requirements.

Example 2:

As shown in Figures 1 and 2, on the basis of Embodiment 1, the number of dust collectors 4, bin pumps and dust storage tanks 11 is multiple, and multiple dust collectors 4 and multiple bin pumps are connected in parallel and In the form of series connection, the dust is finally input into one or more dust storage tanks 11; it is flexible and has a wide range of applications.

The working process of the warehouse pump is:

Start: First, the exhaust valve 82 is opened, with a delay of 3 to 5 seconds. The feed valve 81 is opened to start feeding, with a delay of 3 to 5 seconds, and the arch is opened for 1 to 3 seconds. At this time, the judgment in the warehouse pump begins. Whether the material is filled up: If the material cannot be filled, continue to break the arch for a certain period of time (depending on the site conditions). (1) If the material has not been filled, continue to break the arch for a certain period of time (depending on the site conditions). Break the arch three times. If the material is still not full, it will alarm and shut down; (2) If the material is full, the feed valve 81 will be closed. After a delay of 3 to 5 seconds, the exhaust valve 82 will be closed. After another delay of 5 seconds, the discharge valve 88 will be opened. Delay for another 5 seconds, open the air inlet, and start discharging material. At this time, it is judged whether the material level of the warehouse pump has dropped. Every half minute, it is judged whether the material weight is 90% of the original, that is, whether the material is blocked (if it is greater than that, it is blocked, and if it is less than it, it is blocked. No blockage): ① If there is no blockage, judge whether the material is blocked every half minute. After everything is normal, the material will be discharged until the material level is less than 0.05 tons. Delay for 10 seconds, then turn off the air inlet, and discharge after 3 to 5 seconds. Material valve 88 is closed; delay for 5 seconds and enter the next cycle. ② If the material is blocked, enter the blockage removal state: first close the air intake, open the exhaust valve 82 after 3 to 5 seconds, close the exhaust valve 82 after 10 to 15 seconds, open the air intake after a delay of 3 to 5 seconds, if it recovers After normal feeding, blockage removal will be completed. If feeding is abnormal, continue to remove blockage continuously according to the above method. If it cannot be cleared after 5 times, the system will prompt an alarm, notify manual clearing, and shut down the machine.

The silo pump machine consists of a pump body, a feeding device, a discharging device, an air inlet pipeline system, an evacuation system, a gas fluidization system and an intelligent control system. The whole machine completes the intelligent processing of materials through the forward and backward movements of these components. During the conveying process, it realizes the conversion between automatic control and manual control, sets the number of automatic runs, and sets the weight of the full material. The LCD display displays the set number of automatic runs, the actual number of automatic runs, and the set weight of the full material in real time. The number of blockage removals and the function of controlling multiple units in one unit make it easy for users to choose. Based on the technical characteristics of the warehouse pump, the choice of the warehouse pump can not only realize a highly automated dust removal system process for the crushing equipment, but also enable long-distance transportation of 500m-800m. , realize the flexible arrangement of dust collector and dust storage tank 11 positions in the sand and gravel processing system.

Example 3

As shown in Figure 1, based on Embodiment 2, a sand and gravel processing and dust removal device includes a crushing equipment 1, a dust collection pipeline 3, a dust collector 4, an ash feeding screw 6, and a second manual butterfly valve. 7. Warehouse pump and supporting air source 8. Ash delivery pipeline 9. Side-loading material level meter 10. Dust storage tank 11. Manual gate valve 14. Pneumatic gate valve 15. Bulk discharging device 16. Bulk discharging device Platform 17, outgoing monitoring device 18, automatic control system 12 and outer package 13. The crushing equipment 1 is connected to the dust collector 4 through the dust collection pipeline 3. The bottom of the dust collector 4 passes through the ash screw machine 6 and The second manual butterfly valve 7 is connected to the warehouse pump and supporting air source 8. The warehouse pump and supporting air source 8 are connected to the dust storage tank 11 through the ash delivery pipeline 9. One side of the dust storage tank 11 is connected to the loading position on the side of the tank. 10, the bottom of the dust storage tank 11 is connected in sequence from top to bottom to the manual gate valve 14, the pneumatic gate valve 15, the bulk discharging device 16, the bulk discharging platform 17 and the outgoing monitoring device 18, and the outgoing monitoring device 18 is connected The automatic control system 12, the dust collector 4, the ash feeding screw 6, the second manual butterfly valve 7, the warehouse pump and supporting air source 8 and the outside of the automatic control system 12 are all arranged in the same outer package 13. The present invention adopts an intelligent system of automatic control system 12, which has the characteristics of high degree of automation, low failure rate, reliable operation, simple operation, saving manpower, convenient maintenance, and also has high-tech system integration equipment with an industrial control computer for real-time monitoring of the entire operation process of the warehouse pump. , can realize the conversion between automatic control and manual control, set the number of automatic runs, set the weight of the full material, and the LCD display real-time display of the set number of automatic runs, the actual number of automatic runs, the set weight of the full material, and discharge The number of blockages and the function of controlling multiple units in one are convenient for users to choose. At the same time, positive pressure, fully sealed transportation, fully sealed, and pollution-free transportation are adopted to meet environmental protection requirements.

It further includes a first manual butterfly valve 2. The first manual butterfly valve 2 is connected in the dust collection pipeline 3; it realizes the adjustment and control of the air volume in the pipeline to avoid damaging the filter bag and prolonging the dust collection when the wind speed in the dust collector is too high. the service life of the device.

It further includes a dust removal side loading material level meter 5. The lower half of the dust collector 4 is in the shape of an inverted cone, and the side of the inverted cone is connected to the dust removal side loading material level meter 5. It realizes the detection when the material is full, provides a signal collection point for automatic control, and has a simple structure.

Further, the warehouse pump and supporting air source 8 include a warehouse pump and a supporting air source. The warehouse pump includes a feed pipeline 811, an exhaust pipeline 812, a feed valve 81, an exhaust valve 82, a pump body 83, Fluidization coil 84, weighing module 85, support legs 86, pressure transmitter 87, discharge pipeline 813, discharge valve 88, fluidization device 89, air inlet pipeline 810, the top of the pump body 83 is connected to the inlet pipe respectively. Feed pipeline 811 and exhaust pipeline 812, the middle and lower parts of the feed pipeline 811 are connected to the feed valve 81 and the pressure transmitter 87 respectively, the exhaust pipeline 812 is connected to the exhaust valve 82, and the lower part of the pump body 83 It is an inverted cone. Both sides of the inverted cone are connected to the weighing module 85. The bottom of the weighing module 85 is connected to the support leg 86. The bottom of the pump body 83 is connected to the fluidizing device 89. The fluidizing device 89 is connected to the air inlet pipeline. 810 and the discharge pipeline 813. The discharge valve 88 is connected in the discharge pipeline 813. The fluidization coil 84 includes a first pipeline 841 and a second pipeline 842. One end of the first pipeline 841 is connected to the pump body. 83, one end of the second pipeline 842 is connected to the top of the inverted cone of the pump body 83, the other end of the first pipeline 841 and the other end of the second pipeline 842 merge and connect the air inlet pipeline 810, the feed pipe The feed port of the pipeline 811 is connected to the second manual butterfly valve 7, the discharge port of the discharge pipeline 813 is connected to the ash delivery pipeline 9, and the air inlet of the air intake pipeline 810 is connected to the supporting air source. The use of silo pumps can not only realize a highly automated dust removal system process for sand and gravel crushing equipment, but also enable long-distance transportation of 500m-800m, and realize the flexible arrangement of dust collectors and dust storage tanks in the sand and gravel processing system.

Further, the number of the tank side-loading material level gauges 10 is at least three, which are respectively connected to the high, middle and low positions of the dust storage tank 11. It realizes the judgment of the material level of the powder tank and is easy to operate.

Furthermore, the volume of the silo pump is smaller than the volume of the cone of the dust collector 4 . It is ensured that the dust collector 4 can provide enough boring material. When the dust collector 4 is feeding, it can meet the one-time transportation requirements of the warehouse pump and improve the transportation efficiency.

The dust collector 4 of the present invention is a pulse dust collector, the dust storage tank 11 is an 800T dust storage tank, the manual gate valve 14 is a manual gate valve 300X300, the pneumatic gate valve 15 is a pneumatic gate valve 300X300, and the bulk discharge device 16 It is the bulk discharging device CHT-SZ-C; crushing equipment 1, dust collector 4, ash feeding screw 6, manual butterfly valve, supporting air source 8, side-loading material level meter 10, dust storage tank 11, manual gate valve 14 , Pneumatic gate valve 15, bulk discharging device 16, bulk discharging platform 17, vehicle discharging monitoring device 18, automatic control system 12, weighing module 85, fluidization coil 84, supporting legs 86, pressure transmitter 87 , the fluidizing device 89 and the outer package 13 are all existing technologies and will not be described in detail here.

The above examples are only illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. All designs that are the same or similar to the present invention fall within the protection scope of the present invention.

Claims (4)

1. A method of sand and gravel processing and dust removal, characterized in that dust removal is carried out based on a sand and gravel processing and dust removal device. The sand and gravel processing and dust removal device includes a crushing equipment (1) and a first manual butterfly valve (2) , dust collection pipeline (3), dust collector (4), dust collection side-mounted material level meter (5), ash feeding screw (6), second manual butterfly valve (7), warehouse pump and supporting air source (8 ), ash delivery pipeline (9), side-loading material level meter (10), dust storage tank (11), manual gate valve (14), pneumatic gate valve (15), bulk discharge device (16) , bulk discharging platform (17), discharge monitoring device (18), automatic control system (12) and outer packaging (13), the crushing equipment (1) is connected to the dust collector (1) through the dust collection pipeline (3) 4), the bottom of the dust collector (4) is connected to the warehouse pump and supporting air source (8), the warehouse pump and supporting air source (8) through the ash feeding screw (6) and the second manual butterfly valve (7) from top to bottom. ) is connected to the dust storage tank (11) through the ash delivery pipeline (9). One side of the dust storage tank (11) is connected to the material level meter (10) on the side of the tank. The bottom of the dust storage tank (11) is connected from top to bottom. Connect the manual gate valve (14), pneumatic gate valve (15), bulk discharging device (16), bulk discharging platform (17) and discharging monitoring device (18) in sequence, discharging monitoring device (18) Connect the external parts of the automatic control system (12), dust collector (4), ash feeding screw (6), second manual butterfly valve (7), warehouse pump and supporting air source (8) and the automatic control system (12) Set in the same outer package (13); the first manual butterfly valve (2) is connected in the dust collection pipeline (3); the lower part of the dust collector (4) is in the shape of an inverted cone, and the side of the inverted cone is connected to the dust collection side Loading level gauge (5); the warehouse pump and supporting air source (8) include a warehouse pump and supporting air source, and the warehouse pump includes a feed pipeline (811), an exhaust pipeline (812), and a feed valve (81), exhaust valve (82), pump body (83), fluidization coil (84), weighing module (85), support leg (86), pressure transmitter (87), discharge pipeline (813), discharge valve (88), fluidization device (89), air inlet pipe (810), the top of the pump body (83) is connected to the feed pipe (811) and the exhaust pipe (812) respectively. The middle and lower parts of the feed pipeline (811) are connected to the feed valve (81) and the pressure transmitter (87) respectively. The exhaust pipeline (812) is connected to the exhaust valve (82), and the pump body (83) is connected to the exhaust valve (82). The lower part is an inverted cone. Both sides of the inverted cone are connected to the weighing module (85). The bottom of the weighing module (85) is connected to the support leg (86). The bottom of the pump body (83) is connected to the fluidization device (89). ), the fluidization device (89) is connected to the air inlet pipeline (810) and the discharge pipeline (813) respectively, the discharge valve (88) is connected to the discharge pipeline (813), and the fluidization coil (84) It includes a first pipeline (841) and a second pipeline (842). One end of the first pipeline (841) is connected to the top of the pump body (83), and one end of the second pipeline (842) is connected to the pump body (83). ) The top of the inverted cone, the other end of the first pipeline (841) and the other end of the second pipeline (842) merge and connect to the air inlet pipeline (810), and the feed port of the feed pipeline (811) is connected In the second manual butterfly valve (7), the outlet of the discharge pipeline (813) is connected to the ash delivery pipeline (9), and the air inlet of the air inlet pipeline (810) is connected to the supporting air source; Dust removal based on sand and gravel processing and dust removal equipment includes the following steps: Step 1) When the crushing equipment (1) is in continuous working state, turn on the dust collector (4), and the dust collector (4) collects the dust generated by the crushing equipment (1) through the dust collection pipeline (3), and the collected dust enters Inside the inverted cone of the dust collector (4); Step 2) When the accumulation of dust in the dust collector (4) reaches the full storage capacity, the dust removal side loading level meter (5) sends a high-level signal to the automatic control system (12), and the automatic control system (12) will Open the exhaust valve (82), then open the feed valve (81), and start feeding. Then the ash feeding screw (6) starts with full load, and the ash feeding screw (6) starts working until the material in the bin pump is full, and the ash feeding begins. The screw machine (6) stops, and the feed valve (81) on the final bin pump is closed; Step 3) The air compressor matched with the warehouse pump atomizes the dust in the warehouse pump through the air storage tank and air path, and then sends it to the dust storage tank (11) through the ash delivery pipeline (9); Step 4) Implement the automatic cycle from step 1) to step 3) through the automatic control system (12) until the dust storage tank (11) reaches full capacity, and finally use transportation equipment to transport the full dust storage tank (11). 2. The method of sand and gravel processing and dust removal according to claim 1, characterized in that: there are multiple dust collectors (4), warehouse pumps and dust storage tanks (11), and multiple dust collectors ( 4) Connect multiple warehouse pumps in parallel or series, and finally input the dust into one or more dust storage tanks (11). 3. The method of sand and gravel processing and dust removal according to claim 1, characterized in that: the number of said tank side loading level gauges (10) is at least 3, which are respectively connected to the dust storage tank (11). The high, middle and low positions of the body. 4. The method of sand and gravel processing and dust removal according to claim 3, characterized in that: the volume of the warehouse pump is smaller than the volume of the cone of the dust collector (4).